Personalisable support including anti-forgery device and fabrication process of such supports
AssigneeGemalto SA
InventorJean-Luc Lesur
Life of this patent
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Abstract
The invention relates to a personalisable support comprising anti-forgery devices which are provided in order to indicate every attempt of fraudulent personalization. The support comprises a body (2) which is on one side equipped with personalization data (6,7) which are obtained by carbonization of the base material by means of a laser beam. The anti-forgery devices (8), which totally or partly cover these personalization data, draw a pattern (90, 80) along which bubbles (9) are created whose density (d1-d5) varies depending on the degree of carbonization of the areas (61-65) which are covered by the pattern.
Claims8
A personalisable support comprising:
- a body (2) which is on one side equipped with personalisation data (6,7) in the form of a carbonized base material and which contains graphical anti-forgery devices (8), covering the whole or part of these personalisation data (6,7), with these graphical anti-forgery devices being provided in order to indicate every attempt of fraudulent personalisation of this support at the corresponding places, wherein the graphical anti-forgery devices comprises a pattern (90,80) containing bubbles (9) wherein the density of bubbles varies depending on the degree of carbonisation of the personalisation (6) data areas (61-65) which are covered by this said pattern.
The personalisable support according to one of the claims above, wherein the graphical anti-forgery devices are obtained by means of a CO2 laser beam.
A process for securing a personalisable support consisting of a body (2) which is, on one side, equipped with personalisation data (6,7), comprising:
- carbonising the base material by means of a laser beam, realising the graphical anti-forgery devices (8), by covering all or part of said personalisation data (6,7), according to a pattern (90,80) integrating along this pattern bubbles (9) whose density (d1-d5) varies with the carbonisation degree of the area (61-65) covered by the pattern wherein the graphical anti-forgery devices are provided to indicate any fraudulent personalisation attempt of said support on the said corresponding locations.
A method to secure personalisation data (6,7) on a personalisable support (1), comprising:
- carbonising the base material of said personalisable support by means of a YAG laser;
- and using a CO2 laser to cause the formation of bubbles (9) in the carbonised areas (61-65) with the density (d1-d5) of said bubbles varying according to the degree of carbonisation of the carbonised areas (61-65) in which they are created.
Dependencies are inferred from the claim text.